Method of energy beam welding aluminum to titanium
View Patent ↗A joining of a titanium material with an aluminium material, wherein the parts made of the two substances are connected with each other in a substance-to-substance manner. Preferably, the joining is effected by a laser beam or an electron beam.
1. A method of manufacturing a seat rail for an aircraft passenger seat, the seat rail comprising a seat rail crest and a support structure, by joining a first region of the seat rail crest consisting of a titanium material and a second region of the support structure consisting of a first aluminium material for manufacturing the seat rail, the first region having a first area and the second region having a second area, wherein the first and second areas are to be connected with each other, wherein the method comprises:
arranging the first area and the second area adjacent to one another;
melting-on a second aluminium material at the first area by supplying heat to the second aluminium material only and by not supplying heat to the seat rail crest;
activating a surface in the first area of the first region by supplying heat; and
wherein the heat supply is such that the melted-on second aluminium material wets the activated titanium material and the substance-to-substance bond between the first region and the second region is formed by means of diffusion process which is initiated by a heat flux from the aluminium material toward the titanium material.
2. The method of claim 1 ,
wherein the second aluminium material is the first aluminium material of the second region.
3. The method of claim 1 , further comprising:
applying the heat supply to the first area of the first region and the second area of the second region.
4. The method of claim 1 , further comprising:
applying the heat supply to the second area of the second region.
5. The method of claim 1 , further comprising:
supplying the heat by means of a defocused laser beam or electron beam; and
supplying an inert gas.
6. The method of claim 1 , further comprising:
providing a web in the first area of the first region;
providing a groove in the second area of the second region;
inserting the web into the groove;
providing a thickening comprising the second aluminium material in the second region; and
wherein the thickening is provided as material pool, for joining the first and second regions.